feat(medusa): Modules initializer (#3352)

packages/inventory/src/migrations/run-migration.ts

@@ -0,0 +1,63 @@
+import { InternalModuleDeclaration, LoaderOptions } from "@medusajs/modules-sdk"
+import { DataSource, DataSourceOptions } from "typeorm"
+import { InventoryServiceInitializeOptions } from "../types"
+
+import migrations from "./index"
+
+function getDataSource(
+  dbData: InventoryServiceInitializeOptions["database"]
+): DataSource {
+  return new DataSource({
+    type: dbData!.type,
+    url: dbData!.url,
+    database: dbData!.database,
+    extra: dbData!.extra || {},
+    migrations: migrations
+      .map((migration: any): Function[] => {
+        return Object.values(migration).filter(
+          (fn) => typeof fn === "function"
+        ) as Function[]
+      })
+      .flat(),
+    schema: dbData!.schema,
+    logging: dbData!.logging,
+  } as DataSourceOptions)
+}
+
+export async function runMigrations(
+  { options, logger }: Omit<LoaderOptions, "container">,
+  moduleDeclaration?: InternalModuleDeclaration
+) {
+  const dbData =
+    options?.database as InventoryServiceInitializeOptions["database"]
+
+  try {
+    const dataSource = getDataSource(dbData)
+    await dataSource.initialize()
+    await dataSource.runMigrations()
+
+    logger?.info("Inventory module migration executed")
+  } catch (error) {
+    logger?.error(`Inventory module migration failed to run - Error: ${error}`)
+  }
+}
+
+export async function revertMigration(
+  { options, logger }: Omit<LoaderOptions, "container">,
+  moduleDeclaration?: InternalModuleDeclaration
+) {
+  const dbData =
+    options?.database as InventoryServiceInitializeOptions["database"]
+
+  try {
+    const dataSource = getDataSource(dbData)
+    await dataSource.initialize()
+    await dataSource.undoLastMigration()
+
+    logger?.info("Inventory module migration reverted")
+  } catch (error) {
+    logger?.error(
+      `Inventory module migration failed to revert - Error: ${error}`
+    )
+  }
+}